The 2022 Carnival with the 3.5L Lambda II V6 is largely solid but has shown alarming early engine failure patterns tied to bearing and piston wear, plus some fuel delivery concerns from recalls. Too new for widespread transmission issues yet, but the oil cooler jobs we're seeing hint at thermal management concerns.
Catastrophic Engine Bearing Failure (Rod/Main Bearings)
Occasional · high severityTypical onset: 30,000-80,000 mi
Symptoms: metallic knocking at idle or under load, sudden loss of oil pressure, check engine light with low oil pressure codes, engine seizure in worst cases
Fix: Complete teardown required—expect 18-24 labor hours for short block replacement or full rebuild with new bearings, pistons, and machine work. Some cases covered under powertrain warranty if under 60k mi, but many fall just outside.
Estimated cost: $6,500-12,000
Piston Ring / Cylinder Scoring (Oil Consumption)
Occasional · high severityTypical onset: 40,000-90,000 mi
Symptoms: excessive oil consumption (1 qt per 1,000 mi or worse), blue smoke on startup or acceleration, fouled spark plugs, misfires under load
Fix: Requires engine teardown, cylinder honing or re-boring, new pistons and rings. 20-26 labor hours depending on machine shop turnaround. Head gasket replacement often bundled since you're already in there.
Estimated cost: $7,000-13,500
Fuel Rail and Injector Line Leaks (Recall-Related)
Occasional · high severitySymptoms: fuel odor in cabin or engine bay, visible fuel pooling on intake manifold, hard starting or rough idle, check engine light with fuel trim codes
Fix: Recall NHTSA 23V-396 and 23V-397 cover injector tube and fuel rail replacement. If recall already done and still leaking, expect 3-5 hours for injector seal replacement and fuel rail R&R at indie shop rates.
Estimated cost: $800-1,800
Transmission Oil Cooler Line Leaks
Occasional · medium severityTypical onset: 50,000-100,000 mi
Symptoms: transmission fluid spots under vehicle, burnt fluid smell, transmission overheating warnings, slipping or delayed shifts when hot
Fix: Cooler lines corrode at crimp fittings or rubbing points. Requires line replacement and sometimes full cooler if internal leak contaminates coolant. 2-4 labor hours plus fluid flush.
Estimated cost: $600-1,400
Power Sliding Door Latch Failures (Recall-Related)
Common · medium severitySymptoms: door fails to latch electronically, repeated open/close cycling, door ajar warning stays on, manual latch override needed
Fix: Recall 23V-395 covers latch actuator replacement on both sides. If out of recall window or additional harness damage, expect 2-3 hours per side for actuator and harness repair.
Estimated cost: $400-900
Transmission Mount Collapse
Occasional · low severityTypical onset: 60,000-100,000 mi
Symptoms: clunking on shifts or acceleration, excessive drivetrain movement felt through floor, vibration at idle in Drive
Fix: Common with the 8-speed auto's torque loads in a heavy minivan. Replace all three mounts for best results—4-6 labor hours with subframe support required for lower mount access.
Estimated cost: $800-1,500
Skip it unless deeply discounted—too many catastrophic engine failures appearing way too early for a 2022, and repair costs exceed what most of these vans are worth in 3-5 years.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.